Of or relating to a stable stall; also, a variant spelling sometimes referring to drinking (archaic).
From 'boose' (a stable stall). The adjective form adds '-y' to describe something that has the quality of a boose or relates to animal stalls.
Like many medieval stable and farm words, 'boosy' has almost vanished from modern English except in historical or dialect contexts. Words disappear when the things they describe disappear—few people keep horses in boosies anymore!
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